Trapster – When you see a trap, report it by pressing a button on your phone, or calling a toll free number. Other user's phones will alert them as they approach the trap. Trapster learns the credibility of traps based on how many users agree. It also learns the credibility of each user, over time.

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So how does it work? Our goal is to make it so simple that you don't need to know. But in case you are interested, it combines technologies such as GPS and wireless location, voice transcription, geocoding, reverse geocoding, and SMS, with a central database server. It communicates in real time, using the Internet.

Why you need trapster even if you already have a radar detector

Even the latest, most expensive radar detectors are useless against modern police enforcement technologies such as instant-on and and laser. Your radar/laser detector will still beep, but in almost all cases, only after it is too late. The only way a radar or laser detector can help you is if it beeps in time for you to slow down before the officer gets a reading on your speed. With instant-on and laser, this only happens if the officer activates early or "misses" the shot, and some of the signal leaks past a car in front of you. Radar detectors are still effective for more traditional (Ka etc.) band radar. We recommend that you use both Trapster and a radar/laser detector for the best possible coverage. Also radar detectors are illegal in many US states, and are illegal nationwide for commercial vehicles.